A racketeer is someone who makes money from illegal activities such as threatening people or selling worthless, immoral, or illegal goods or services.
英漢詞典釋義
n.
干非法勾當者,騙子
He was a famous racketeer in Chicago.他是芝加哥有名的騙子。He was in no sense a political prisoner, but a gangster and racketeer who rightly did six years in jail.他絕不是一個政治犯，而是一個歹徒和敲詐勒索犯，罪有應得地在監獄里蹲了6年。
英英詞典釋義
Noun
1. some who commits crimes for profit (especially one who obtains money by fraud or extortion)
Verb
1. carry on illegal business activities involving crime